Questions from College Physics

Q: (a) What would the net charges on the Sun and

(a) What would the net charges on the Sun and Earth have to be if the electric force instead of the gravitational force were responsible for keeping Earth in its orbit? There are many possible answers...

Q: What is the de Broglie wavelength of an electron with kinetic energy

What is the de Broglie wavelength of an electron with kinetic energy 7.0 TeV?

Q: A 200.0 µF capacitor is placed across a 12.

A 200.0 µF capacitor is placed across a 12.0 V battery. When a switch is thrown, the battery is removed from the capacitor and the capacitor is connected across a heater that is immersed in 1.00 cm3 o...

Q: A chamber with a fixed volume of 1.0 m3 contains

A chamber with a fixed volume of 1.0 m3 contains a monatomic gas at 3.00 × 102 K. The chamber is heated to a temperature of 4.00 × 102 K. This operation requires 10.0 J of heat. (Assume all the energy...

Q: As heat flows into a substance, its temperature changes according to

As heat flows into a substance, its temperature changes according to the graph in the diagram. For which sections of the graph is the substance undergoing a phase change? For the sections you identifi...

Q: In an emergency, it is sometimes the practice of medical professionals

In an emergency, it is sometimes the practice of medical professionals to immerse a patient who suffers from heat stroke in an ice bath, a mixture of ice and water in equilibrium at 0°C, in order to r...

Q: In an RLC series circuit, these three elements are connected in

In an RLC series circuit, these three elements are connected in series: a resistor of 60.0 Ω, a 40.0 mH inductor, and a 0.0500 F capacitor. The series elements are connected across the terminals of an...

Q: What is the maximum possible torque on the molecule due to the

What is the maximum possible torque on the molecule due to the electric field?

Q: Charges of −12.0 nC and −22.0

Charges of −12.0 nC and −22.0 nC are separated by 0.700 m. What is the potential midway between the two charges?

Q: In a physics lab, a student accidentally drops a 25.

In a physics lab, a student accidentally drops a 25.0 g brass washer into an open dewar of liquid nitrogen at 77.2 K. How much liquid nitrogen boils away as the washer cools from 293 K to 77.2 K? The...